ADU Regulations in Temecula, California
Riverside County · CA · Pop. 115,000
Max ADU Size
1,200
sq ft detached
Rear Setback
4 ft
Permit Timeline
60 days
Build Cost
$150,000 – $305,000
Zoning
Allowed ADU Types
ADUs and JADUs permitted by right on all residentially zoned lots. Temecula is a wine country destination and growing remote-work hub in Southwest Riverside County. Many neighborhoods are within HOA-governed planned developments. State law prohibits owner-occupancy requirements.
Source: City of Temecula — Accessory Dwelling Units · Temecula Municipal Code Title 17 (Development Code), Section 17.06.050
Dimensions
Size & Setback Requirements
Detached
1,200
sq ft max
JADU
500
sq ft max
Attached
50% of primary home, max 1,200 sq ft
Setbacks
front
Same as primary dwelling per underlying zone
side
4 ft
rear
4 ft
Max height: 16 ft
Lot coverage: Per underlying zone; planned developments and wine country estates may have separate HOA or specific plan requirements
Temecula's Wine Country area (De Portola Road corridor) has specific plan overlay regulations that may affect ADU siting. Most master-planned neighborhoods (Redhawk, Wolf Creek, Morgan Hill) have HOAs with design standards that apply above and beyond city minimums.
Permitting
Permit Process
Department
City of Temecula — Community Development Department, Planning Division
Review Timeline
60 days
Permit Fees
$6,500 – $13,000
Impact Fees
Impact fees waived for ADUs under 750 sq ft; prorated for larger units
Required Documents
- ›Site plan with property dimensions and setbacks
- ›Floor plans
- ›Elevations
- ›Title 24 energy compliance report
- ›Structural drawings
- ›HOA approval letter (if applicable)
- ›Specific Plan compliance documentation (if applicable)
Temecula's planning department is generally efficient and meets state-mandated 60-day review timelines. HOA approval, while not a city requirement, should be secured before submitting for permit. Wine Country specific plan areas should be verified separately. The city is increasingly ADU-friendly as housing demand grows.
Visit City of Temecula — Community Development Department, Planning Division →Infrastructure
Utilities & Requirements
Solar
Required
Parking
Not required
Separate Meter
Optional
Fire Sprinklers
See note
Financials
ADU Costs in Temecula
Typical Build Cost
$150,000 – $305,000
Cost per Sq Ft
$210 – $275
Monthly Rental
$1,600 – $2,600/mo/mo
Property Value Added
Adds $130,000 – $240,000 to property value
Available Grants & Programs
- ★CalHFA ADU Grant Program available (up to $40,000)
Temecula's wine country appeal, improving quality of life, and growing remote-work culture have increased ADU demand from both homeowners and renters. The city's location between San Diego and Los Angeles, combined with lower home prices than coastal markets, makes ADU investment returns particularly attractive.
Use the free ADU Cost Calculator →Free Service
Get Contractor Quotes in Temecula
Connect with licensed local ADU contractors. Takes 2 minutes, no obligation.
Explore More
Nearby Cities in Riverside County
Temecula Quick Facts
- Max size1,200 sq ft
- Rear setback4 ft
- Permit timeline60 days
- Build cost$150,000 – $305,000
- Rental income$1,600 – $2,600/mo/mo
- Owner occupancyNot required
Official Source
City of Temecula — Accessory Dwelling UnitsTemecula Municipal Code Title 17 (Development Code), Section 17.06.050
Last verified: March 14, 2026
Free Tools
Stay Updated
ADU rules change often.
Get notified when Temecula's regulations update, plus guides on permitting and financing.